The Screw,externally Relieved Body, cataloged under National Stock Number 5305-00-286-1685, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Army, United States Department of the Dba Rock Island Arsenal Jmtc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-286-1685 |
| Primary Part Number | 5226444 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| Fastener Length | 0.906 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN |
| Thread Length | 0.312 INCHES MINIMUM IN |
| Material Document and Classification | QQ-S-630 FED SPEC 1ST MATERIAL RESPONSE OR ASTM A576 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A108 ASSN STD 3RD MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.172 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.453 INCHES MINIMUM AND 0.484 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | PHOSPHATE OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.477 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5226444 | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| 5226444 | Army, United States Department of the Dba Watervliet Arsenal Div Business Development (USA) |
| Reference | Meaning |
|---|---|
| 200820226-01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-286-1685 is a Screw,externally Relieved Body, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-286-1685 has 2 manufacturer part numbers on file: 5226444 (Army, United States Department of the Dba Rock Island Arsenal Jmtc), 5226444 (Army, United States Department of the Dba Watervliet Arsenal Div Business Development).
Key specifications for 5226444: Fastener Length: 0.906 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN; Thread Length: 0.312 INCHES MINIMUM IN; Material Document and Classification: QQ-S-630 FED SPEC 1ST MATERIAL RESPONSE OR ASTM A576 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A108 ASSN STD 3RD MATERIAL RESPONSE OVERALL; First Diameter From Head: 0.172 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN. 17 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.